Jeremiah can measure the affliction since Jehovah is there

Jeremiah, having now found Jehovah in the affliction,
tranquilly measures its whole extent. But this is itself a
consolation. For after all Jehovah who changes not is there to
comfort the heart. This is chapter 4. He calls the whole to mind,
and contrasts that which Jerusalem was, when under the blessing of
Jehovah, with that which His anger has produced. It is no longer
only the overwhelming circumstances of the present scene, but what
it was before God. The Nazarites pass before his thoughts; that
which Jerusalem, as the city of the great King, had been even in
the eyes of her enemies; the anointed of Jehovah, under whose
shadow the people might have lived (as we have already seen),
although the Gentiles ruled -- the anointed of Jehovah had been
taken in their pits, like the prey of the hunter. But the afflicted
spirit of God's servant, who bears the burden of His people, can
now estimate not only the affliction that overwhelms them, but the
position of the enemies of Jerusalem, and that of the beloved
city. Nay, he who would have one run to and fro through the streets
of Jerusalem to find a just one, now sees the enemies have slain
the just in her midst (see v. 13 and Jer. 5: 1). The cup of God's
wrath shall pass through unto Edom, who was rejoicing in the ruin
of the city of Jehovah; and as to Zion, she has doubtless drunk
this cup to the dregs; but if she has done so, it was in order that
she might drink of it no more. The punishment of her iniquity is
accomplished, she shall no more be carried into captivity. All was
finished for her: she had drunk the cup which she confessed she had
deserved (see chap. 4: 11; 1: 18-20). But the sin of haughty Edom
should be laid bare. God would visit her iniquity.